Influence of sintering temperature on microstructure and electrical properties of titanium porous-transport layers for proton exchange membrane water electrolyzer applications

IF 2.1 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Bulletin of Materials Science Pub Date : 2025-01-25 DOI:10.1007/s12034-024-03391-1

Doan Dinh Phuong, Do Chi Linh, Pham Hong Hanh, Nguyen Quoc Thinh, Luong Van Duong

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Abstract

Porous transport layers (PTL) are used in the proton exchange membrane water electrolyzers to facilitate the gas/water transport and the electric charge transfer. As a result, the PTL is critical in ensuring the efficiency of the electrolyzing process. This work aims to produce titanium PTLs through the spark plasma sintering process. The sintering temperature was varied from 500 to 650°C to investigate the characteristics of the titanium PTL samples while maintaining the sintering pressure and holding time at 10 MPa and 10 min, respectively. The phase structure and morphology of the samples were investigated by X-ray diffraction and scanning electron microscopy analyses. The compressive strength and the corrosion behaviour of the samples were investigated by the compressive testing and the electrochemical corrosion testing, respectively. The experimental results showed that there were no new phases formed when the Ti PTLs were sintered at different temperatures. With an increase in the sintering temperature, the porosity of the samples considerably decreased, while their compressive strength, electrical conductivity and corrosion resistance increased. It is suggested that selecting the optimum sintering temperature for sintered samples can improve the mass transport behaviour in PEM electrolyzers and produce superior PTLs.

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烧结温度对质子交换膜电解用钛多孔传输层微观结构和电性能的影响

多孔传输层（PTL）用于质子交换膜水电解槽中，以促进气/水的传输和电荷的转移。因此，PTL对于确保电解过程的效率至关重要。本工作旨在通过火花等离子烧结工艺生产钛PTLs。烧结温度为500 ~ 650℃，烧结压力为10 MPa，保温时间为10 min，研究钛PTL样品的特性。用x射线衍射和扫描电镜分析了样品的相结构和形貌。通过压缩测试和电化学腐蚀测试，分别研究了试样的抗压强度和腐蚀性能。实验结果表明，在不同温度下烧结Ti PTLs均未形成新相。随着烧结温度的升高，试样的孔隙率显著降低，抗压强度、电导率和耐蚀性均有所提高。结果表明，选择合适的烧结温度可以改善PEM电解槽内的传质行为，从而制备出优良的PTLs。

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来源期刊

Bulletin of Materials Science 工程技术-材料科学：综合

CiteScore

3.40

自引率

5.60%

发文量

209

审稿时长

11.5 months

期刊介绍： The Bulletin of Materials Science is a bi-monthly journal being published by the Indian Academy of Sciences in collaboration with the Materials Research Society of India and the Indian National Science Academy. The journal publishes original research articles, review articles and rapid communications in all areas of materials science. The journal also publishes from time to time important Conference Symposia/ Proceedings which are of interest to materials scientists. It has an International Advisory Editorial Board and an Editorial Committee. The Bulletin accords high importance to the quality of articles published and to keep at a minimum the processing time of papers submitted for publication.